_ Git - ldk-java/blob - src/main/java/org/ldk/structs/RoutingMessageHandler.java

   1 package org.ldk.structs;
   2
   3 import org.ldk.impl.bindings;
   4 import org.ldk.enums.*;
   5 import org.ldk.util.*;
   6 import java.util.Arrays;
   7 import javax.annotation.Nullable;
   8
   9 /**
  10  * A trait to describe an object which can receive routing messages.
  11  *
  12  * # Implementor DoS Warnings
  13  *
  14  * For `gossip_queries` messages there are potential DoS vectors when handling
  15  * inbound queries. Implementors using an on-disk network graph should be aware of
  16  * repeated disk I/O for queries accessing different parts of the network graph.
  17  */
  18 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  19 public class RoutingMessageHandler extends CommonBase {
  20         final bindings.LDKRoutingMessageHandler bindings_instance;
  21         RoutingMessageHandler(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
  22         private RoutingMessageHandler(bindings.LDKRoutingMessageHandler arg, bindings.LDKMessageSendEventsProvider MessageSendEventsProvider) {
  23                 super(bindings.LDKRoutingMessageHandler_new(arg, MessageSendEventsProvider));
  24                 this.ptrs_to.add(arg);
  25                 this.ptrs_to.add(MessageSendEventsProvider);
  26                 this.bindings_instance = arg;
  27         }
  28         @Override @SuppressWarnings("deprecation")
  29         protected void finalize() throws Throwable {
  30                 if (ptr != 0) { bindings.RoutingMessageHandler_free(ptr); } super.finalize();
  31         }
  32
  33         public static interface RoutingMessageHandlerInterface {
  34                 /**
  35                  * Handle an incoming node_announcement message, returning true if it should be forwarded on,
  36                  * false or returning an Err otherwise.
  37                  */
  38                 Result_boolLightningErrorZ handle_node_announcement(NodeAnnouncement msg);
  39                 /**
  40                  * Handle a channel_announcement message, returning true if it should be forwarded on, false
  41                  * or returning an Err otherwise.
  42                  */
  43                 Result_boolLightningErrorZ handle_channel_announcement(ChannelAnnouncement msg);
  44                 /**
  45                  * Handle an incoming channel_update message, returning true if it should be forwarded on,
  46                  * false or returning an Err otherwise.
  47                  */
  48                 Result_boolLightningErrorZ handle_channel_update(ChannelUpdate msg);
  49                 /**
  50                  * Gets a subset of the channel announcements and updates required to dump our routing table
  51                  * to a remote node, starting at the short_channel_id indicated by starting_point and
  52                  * including the batch_amount entries immediately higher in numerical value than starting_point.
  53                  */
  54                 ThreeTuple_ChannelAnnouncementChannelUpdateChannelUpdateZ[] get_next_channel_announcements(long starting_point, byte batch_amount);
  55                 /**
  56                  * Gets a subset of the node announcements required to dump our routing table to a remote node,
  57                  * starting at the node *after* the provided publickey and including batch_amount entries
  58                  * immediately higher (as defined by <PublicKey as Ord>::cmp) than starting_point.
  59                  * If None is provided for starting_point, we start at the first node.
  60                  *
  61                  * Note that starting_point (or a relevant inner pointer) may be NULL or all-0s to represent None
  62                  */
  63                 NodeAnnouncement[] get_next_node_announcements(byte[] starting_point, byte batch_amount);
  64                 /**
  65                  * Called when a connection is established with a peer. This can be used to
  66                  * perform routing table synchronization using a strategy defined by the
  67                  * implementor.
  68                  */
  69                 void sync_routing_table(byte[] their_node_id, Init init);
  70                 /**
  71                  * Handles the reply of a query we initiated to learn about channels
  72                  * for a given range of blocks. We can expect to receive one or more
  73                  * replies to a single query.
  74                  */
  75                 Result_NoneLightningErrorZ handle_reply_channel_range(byte[] their_node_id, ReplyChannelRange msg);
  76                 /**
  77                  * Handles the reply of a query we initiated asking for routing gossip
  78                  * messages for a list of channels. We should receive this message when
  79                  * a node has completed its best effort to send us the pertaining routing
  80                  * gossip messages.
  81                  */
  82                 Result_NoneLightningErrorZ handle_reply_short_channel_ids_end(byte[] their_node_id, ReplyShortChannelIdsEnd msg);
  83                 /**
  84                  * Handles when a peer asks us to send a list of short_channel_ids
  85                  * for the requested range of blocks.
  86                  */
  87                 Result_NoneLightningErrorZ handle_query_channel_range(byte[] their_node_id, QueryChannelRange msg);
  88                 /**
  89                  * Handles when a peer asks us to send routing gossip messages for a
  90                  * list of short_channel_ids.
  91                  */
  92                 Result_NoneLightningErrorZ handle_query_short_channel_ids(byte[] their_node_id, QueryShortChannelIds msg);
  93         }
  94         private static class LDKRoutingMessageHandlerHolder { RoutingMessageHandler held; }
  95         public static RoutingMessageHandler new_impl(RoutingMessageHandlerInterface arg, MessageSendEventsProvider.MessageSendEventsProviderInterface MessageSendEventsProvider_impl) {
  96                 final LDKRoutingMessageHandlerHolder impl_holder = new LDKRoutingMessageHandlerHolder();
  97                 impl_holder.held = new RoutingMessageHandler(new bindings.LDKRoutingMessageHandler() {
  98                         @Override public long handle_node_announcement(long msg) {
  99                                 NodeAnnouncement msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new NodeAnnouncement(null, msg); }
 100                                 Result_boolLightningErrorZ ret = arg.handle_node_announcement(msg_hu_conv);
 101                                 long result = ret == null ? 0 : ret.clone_ptr();
 102                                 return result;
 103                         }
 104                         @Override public long handle_channel_announcement(long msg) {
 105                                 ChannelAnnouncement msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new ChannelAnnouncement(null, msg); }
 106                                 Result_boolLightningErrorZ ret = arg.handle_channel_announcement(msg_hu_conv);
 107                                 long result = ret == null ? 0 : ret.clone_ptr();
 108                                 return result;
 109                         }
 110                         @Override public long handle_channel_update(long msg) {
 111                                 ChannelUpdate msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new ChannelUpdate(null, msg); }
 112                                 Result_boolLightningErrorZ ret = arg.handle_channel_update(msg_hu_conv);
 113                                 long result = ret == null ? 0 : ret.clone_ptr();
 114                                 return result;
 115                         }
 116                         @Override public long[] get_next_channel_announcements(long starting_point, byte batch_amount) {
 117                                 ThreeTuple_ChannelAnnouncementChannelUpdateChannelUpdateZ[] ret = arg.get_next_channel_announcements(starting_point, batch_amount);
 118                                 long[] result = ret != null ? Arrays.stream(ret).mapToLong(ret_conv_59 -> ret_conv_59 == null ? 0 : ret_conv_59.clone_ptr()).toArray() : null;
 119                                 return result;
 120                         }
 121                         @Override public long[] get_next_node_announcements(byte[] starting_point, byte batch_amount) {
 122                                 NodeAnnouncement[] ret = arg.get_next_node_announcements(starting_point, batch_amount);
 123                                 long[] result = ret != null ? Arrays.stream(ret).mapToLong(ret_conv_18 -> ret_conv_18 == null ? 0 : ret_conv_18.clone_ptr()).toArray() : null;
 124                                 return result;
 125                         }
 126                         @Override public void sync_routing_table(byte[] their_node_id, long init) {
 127                                 Init init_hu_conv = null; if (init < 0 || init > 4096) { init_hu_conv = new Init(null, init); }
 128                                 arg.sync_routing_table(their_node_id, init_hu_conv);
 129                         }
 130                         @Override public long handle_reply_channel_range(byte[] their_node_id, long msg) {
 131                                 ReplyChannelRange msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new ReplyChannelRange(null, msg); }
 132                                 msg_hu_conv.ptrs_to.add(this);
 133                                 Result_NoneLightningErrorZ ret = arg.handle_reply_channel_range(their_node_id, msg_hu_conv);
 134                                 long result = ret == null ? 0 : ret.clone_ptr();
 135                                 return result;
 136                         }
 137                         @Override public long handle_reply_short_channel_ids_end(byte[] their_node_id, long msg) {
 138                                 ReplyShortChannelIdsEnd msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new ReplyShortChannelIdsEnd(null, msg); }
 139                                 msg_hu_conv.ptrs_to.add(this);
 140                                 Result_NoneLightningErrorZ ret = arg.handle_reply_short_channel_ids_end(their_node_id, msg_hu_conv);
 141                                 long result = ret == null ? 0 : ret.clone_ptr();
 142                                 return result;
 143                         }
 144                         @Override public long handle_query_channel_range(byte[] their_node_id, long msg) {
 145                                 QueryChannelRange msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new QueryChannelRange(null, msg); }
 146                                 msg_hu_conv.ptrs_to.add(this);
 147                                 Result_NoneLightningErrorZ ret = arg.handle_query_channel_range(their_node_id, msg_hu_conv);
 148                                 long result = ret == null ? 0 : ret.clone_ptr();
 149                                 return result;
 150                         }
 151                         @Override public long handle_query_short_channel_ids(byte[] their_node_id, long msg) {
 152                                 QueryShortChannelIds msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new QueryShortChannelIds(null, msg); }
 153                                 msg_hu_conv.ptrs_to.add(this);
 154                                 Result_NoneLightningErrorZ ret = arg.handle_query_short_channel_ids(their_node_id, msg_hu_conv);
 155                                 long result = ret == null ? 0 : ret.clone_ptr();
 156                                 return result;
 157                         }
 158                 }, MessageSendEventsProvider.new_impl(MessageSendEventsProvider_impl).bindings_instance);
 159                 return impl_holder.held;
 160         }
 161
 162         /**
 163          * Gets the underlying MessageSendEventsProvider.
 164          */
 165         public MessageSendEventsProvider get_message_send_events_provider() {
 166                 MessageSendEventsProvider res = new MessageSendEventsProvider(null, bindings.LDKRoutingMessageHandler_get_MessageSendEventsProvider(this.ptr));
 167                 this.ptrs_to.add(res);
 168                 return res;
 169         }
 170
 171         /**
 172          * Handle an incoming node_announcement message, returning true if it should be forwarded on,
 173          * false or returning an Err otherwise.
 174          */
 175         public Result_boolLightningErrorZ handle_node_announcement(NodeAnnouncement msg) {
 176                 long ret = bindings.RoutingMessageHandler_handle_node_announcement(this.ptr, msg == null ? 0 : msg.ptr & ~1);
 177                 if (ret >= 0 && ret <= 4096) { return null; }
 178                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 179                 this.ptrs_to.add(msg);
 180                 return ret_hu_conv;
 181         }
 182
 183         /**
 184          * Handle a channel_announcement message, returning true if it should be forwarded on, false
 185          * or returning an Err otherwise.
 186          */
 187         public Result_boolLightningErrorZ handle_channel_announcement(ChannelAnnouncement msg) {
 188                 long ret = bindings.RoutingMessageHandler_handle_channel_announcement(this.ptr, msg == null ? 0 : msg.ptr & ~1);
 189                 if (ret >= 0 && ret <= 4096) { return null; }
 190                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 191                 this.ptrs_to.add(msg);
 192                 return ret_hu_conv;
 193         }
 194
 195         /**
 196          * Handle an incoming channel_update message, returning true if it should be forwarded on,
 197          * false or returning an Err otherwise.
 198          */
 199         public Result_boolLightningErrorZ handle_channel_update(ChannelUpdate msg) {
 200                 long ret = bindings.RoutingMessageHandler_handle_channel_update(this.ptr, msg == null ? 0 : msg.ptr & ~1);
 201                 if (ret >= 0 && ret <= 4096) { return null; }
 202                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 203                 this.ptrs_to.add(msg);
 204                 return ret_hu_conv;
 205         }
 206
 207         /**
 208          * Gets a subset of the channel announcements and updates required to dump our routing table
 209          * to a remote node, starting at the short_channel_id indicated by starting_point and
 210          * including the batch_amount entries immediately higher in numerical value than starting_point.
 211          */
 212         public ThreeTuple_ChannelAnnouncementChannelUpdateChannelUpdateZ[] get_next_channel_announcements(long starting_point, byte batch_amount) {
 213                 long[] ret = bindings.RoutingMessageHandler_get_next_channel_announcements(this.ptr, starting_point, batch_amount);
 214                 ThreeTuple_ChannelAnnouncementChannelUpdateChannelUpdateZ[] ret_conv_59_arr = new ThreeTuple_ChannelAnnouncementChannelUpdateChannelUpdateZ[ret.length];
 215                 for (int h = 0; h < ret.length; h++) {
 216                         long ret_conv_59 = ret[h];
 217                         ThreeTuple_ChannelAnnouncementChannelUpdateChannelUpdateZ ret_conv_59_hu_conv = new ThreeTuple_ChannelAnnouncementChannelUpdateChannelUpdateZ(null, ret_conv_59);
 218                         ret_conv_59_hu_conv.ptrs_to.add(this);
 219                         ret_conv_59_arr[h] = ret_conv_59_hu_conv;
 220                 }
 221                 return ret_conv_59_arr;
 222         }
 223
 224         /**
 225          * Gets a subset of the node announcements required to dump our routing table to a remote node,
 226          * starting at the node *after* the provided publickey and including batch_amount entries
 227          * immediately higher (as defined by <PublicKey as Ord>::cmp) than starting_point.
 228          * If None is provided for starting_point, we start at the first node.
 229          *
 230          * Note that starting_point (or a relevant inner pointer) may be NULL or all-0s to represent None
 231          */
 232         public NodeAnnouncement[] get_next_node_announcements(@Nullable byte[] starting_point, byte batch_amount) {
 233                 long[] ret = bindings.RoutingMessageHandler_get_next_node_announcements(this.ptr, InternalUtils.check_arr_len(starting_point, 33), batch_amount);
 234                 NodeAnnouncement[] ret_conv_18_arr = new NodeAnnouncement[ret.length];
 235                 for (int s = 0; s < ret.length; s++) {
 236                         long ret_conv_18 = ret[s];
 237                         NodeAnnouncement ret_conv_18_hu_conv = null; if (ret_conv_18 < 0 || ret_conv_18 > 4096) { ret_conv_18_hu_conv = new NodeAnnouncement(null, ret_conv_18); }
 238                         ret_conv_18_hu_conv.ptrs_to.add(this);
 239                         ret_conv_18_arr[s] = ret_conv_18_hu_conv;
 240                 }
 241                 return ret_conv_18_arr;
 242         }
 243
 244         /**
 245          * Called when a connection is established with a peer. This can be used to
 246          * perform routing table synchronization using a strategy defined by the
 247          * implementor.
 248          */
 249         public void sync_routing_table(byte[] their_node_id, Init init) {
 250                 bindings.RoutingMessageHandler_sync_routing_table(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), init == null ? 0 : init.ptr & ~1);
 251                 this.ptrs_to.add(init);
 252         }
 253
 254         /**
 255          * Handles the reply of a query we initiated to learn about channels
 256          * for a given range of blocks. We can expect to receive one or more
 257          * replies to a single query.
 258          */
 259         public Result_NoneLightningErrorZ handle_reply_channel_range(byte[] their_node_id, ReplyChannelRange msg) {
 260                 long ret = bindings.RoutingMessageHandler_handle_reply_channel_range(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), msg == null ? 0 : msg.ptr & ~1);
 261                 if (ret >= 0 && ret <= 4096) { return null; }
 262                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 263                 return ret_hu_conv;
 264         }
 265
 266         /**
 267          * Handles the reply of a query we initiated asking for routing gossip
 268          * messages for a list of channels. We should receive this message when
 269          * a node has completed its best effort to send us the pertaining routing
 270          * gossip messages.
 271          */
 272         public Result_NoneLightningErrorZ handle_reply_short_channel_ids_end(byte[] their_node_id, ReplyShortChannelIdsEnd msg) {
 273                 long ret = bindings.RoutingMessageHandler_handle_reply_short_channel_ids_end(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), msg == null ? 0 : msg.ptr & ~1);
 274                 if (ret >= 0 && ret <= 4096) { return null; }
 275                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 276                 return ret_hu_conv;
 277         }
 278
 279         /**
 280          * Handles when a peer asks us to send a list of short_channel_ids
 281          * for the requested range of blocks.
 282          */
 283         public Result_NoneLightningErrorZ handle_query_channel_range(byte[] their_node_id, QueryChannelRange msg) {
 284                 long ret = bindings.RoutingMessageHandler_handle_query_channel_range(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), msg == null ? 0 : msg.ptr & ~1);
 285                 if (ret >= 0 && ret <= 4096) { return null; }
 286                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 287                 return ret_hu_conv;
 288         }
 289
 290         /**
 291          * Handles when a peer asks us to send routing gossip messages for a
 292          * list of short_channel_ids.
 293          */
 294         public Result_NoneLightningErrorZ handle_query_short_channel_ids(byte[] their_node_id, QueryShortChannelIds msg) {
 295                 long ret = bindings.RoutingMessageHandler_handle_query_short_channel_ids(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), msg == null ? 0 : msg.ptr & ~1);
 296                 if (ret >= 0 && ret <= 4096) { return null; }
 297                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 298                 return ret_hu_conv;
 299         }
 300
 301 }